Hammers hammers everywhere

I had similar problem where hammers were found everywhere because bats kept killing builder pigs I think

Killed a builder pig later one time on same save file and it dropped like 20 - 30 hammers! Not sure if it is present still, has not happened for me since update where pigs didn't lose their houses upon them burning

Had this issue in a couple of different saves now.

100% hammers littering the ground and I doubt it's because of vampire bats or anything else killing the builders. Been dumping them in one spot to see how many there are...

More hammers littering the town...

... and now even in the jungle. I doubt very much any builders made their way over here and I definitely did not leave these here.